Searching for "MCMtromp" or "Modified Cahn-Hilliard" in GitHub might lead to community forks or archived versions.

The .txt or .m (MATLAB) files associated with it contain algorithms to solve the non-linear, high-order PDEs (partial differential equations) governing these processes tromp.io. 2. How to "Download MCMtromp txt"

Sometimes published papers on grain boundary dynamics include simulation code in supplementary materials, which may be labeled with ".txt" extensions. 4. What to look for in the file

The most reliable source for this software is directly from the developer's website.

If the main site is inaccessible, research software is sometimes archived in:

You can find the necessary files, likely including documentation or script files (which might be in text format), through the download links provided on the site's main simulation page tromp.io.

Look for settings to adjust mobility, surface energy, and simulation time steps.